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Firefox crashes after start, no error shown.

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I'm using firefox developers edition, and after one of the updates (unsure which one) it does not restarted after updating. After I click on Firefox icon I can see two firefox processes in task manager, but after some time they just quit, without showing any window or even error message. I tried to enter safe mode by pressing "shift" while starting firefox - no result, processes quit before even showing dialog about entering safe mode. I tried to uninstall & install firefox back - still the same result. I removed profiles in "cd %APPDATA%\Mozilla\Firefox\Profiles\" - still the same. There are two records in windows logs upon each start attempt:

<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Windows Error Reporting" /> <EventID Qualifiers="0">1001</EventID> <Level>4</Level> <Task>0</Task> <Keywords>0x80000000000000</Keywords> <TimeCreated SystemTime="2019-10-22T15:39:08.160403300Z" /> <EventRecordID>106105</EventRecordID> <Channel>Application</Channel> <Computer>Viper</Computer> <Security /> </System> <EventData> <Data /> <Data>0</Data> <Data>APPCRASH</Data> <Data>Нет данных</Data> <Data>0</Data> <Data>firefox.exe</Data> <Data>71.0.0.7233</Data> <Data>5dadf568</Data> <Data>StackHash_1b6d</Data> <Data>0.0.0.0</Data> <Data>00000000</Data> <Data>c0000005</Data> <Data>PCH_39_FROM_IseGuard64+0x0000000000005CC0</Data> <Data /> <Data /> <Data /> <Data>C:\ProgramData\Microsoft\Windows\WER\ReportQueue\AppCrash_firefox.exe_efd43163517d8ccdc0b1ee250ca1c524446cd_c54af82d_3e0f87a1</Data> <Data /> <Data>0</Data> <Data>173c73da-f8df-4db3-bd97-482820bcb8a4</Data> <Data>100</Data> <Data /> <Data>0</Data> </EventData> </Event>


<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Application Error" /> <EventID Qualifiers="0">1000</EventID> <Level>2</Level> <Task>100</Task> <Keywords>0x80000000000000</Keywords> <TimeCreated SystemTime="2019-10-22T15:38:55.407904100Z" /> <EventRecordID>106104</EventRecordID> <Channel>Application</Channel> <Computer>Viper</Computer> <Security /> </System> <EventData> <Data>firefox.exe</Data> <Data>71.0.0.7233</Data> <Data>5dadf568</Data> <Data>unknown</Data> <Data>0.0.0.0</Data> <Data>00000000</Data> <Data>c0000005</Data> <Data>00007ffe882700ea</Data> <Data>414</Data> <Data>01d588eed01a7d37</Data> <Data>C:\Program Files\Firefox Developer Edition\firefox.exe</Data> <Data>unknown</Data> <Data>173c73da-f8df-4db3-bd97-482820bcb8a4</Data> <Data /> <Data /> </EventData> </Event>

I don't even have idea where to start looking for the actual reason.

I'm using firefox developers edition, and after one of the updates (unsure which one) it does not restarted after updating. After I click on Firefox icon I can see two firefox processes in task manager, but after some time they just quit, without showing any window or even error message. I tried to enter safe mode by pressing "shift" while starting firefox - no result, processes quit before even showing dialog about entering safe mode. I tried to uninstall & install firefox back - still the same result. I removed profiles in "cd %APPDATA%\Mozilla\Firefox\Profiles\" - still the same. There are two records in windows logs upon each start attempt: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Windows Error Reporting" /> <EventID Qualifiers="0">1001</EventID> <Level>4</Level> <Task>0</Task> <Keywords>0x80000000000000</Keywords> <TimeCreated SystemTime="2019-10-22T15:39:08.160403300Z" /> <EventRecordID>106105</EventRecordID> <Channel>Application</Channel> <Computer>Viper</Computer> <Security /> </System> <EventData> <Data /> <Data>0</Data> <Data>APPCRASH</Data> <Data>Нет данных</Data> <Data>0</Data> <Data>firefox.exe</Data> <Data>71.0.0.7233</Data> <Data>5dadf568</Data> <Data>StackHash_1b6d</Data> <Data>0.0.0.0</Data> <Data>00000000</Data> <Data>c0000005</Data> <Data>PCH_39_FROM_IseGuard64+0x0000000000005CC0</Data> <Data /> <Data /> <Data /> <Data>C:\ProgramData\Microsoft\Windows\WER\ReportQueue\AppCrash_firefox.exe_efd43163517d8ccdc0b1ee250ca1c524446cd_c54af82d_3e0f87a1</Data> <Data /> <Data>0</Data> <Data>173c73da-f8df-4db3-bd97-482820bcb8a4</Data> <Data>100</Data> <Data /> <Data>0</Data> </EventData> </Event> <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Application Error" /> <EventID Qualifiers="0">1000</EventID> <Level>2</Level> <Task>100</Task> <Keywords>0x80000000000000</Keywords> <TimeCreated SystemTime="2019-10-22T15:38:55.407904100Z" /> <EventRecordID>106104</EventRecordID> <Channel>Application</Channel> <Computer>Viper</Computer> <Security /> </System> <EventData> <Data>firefox.exe</Data> <Data>71.0.0.7233</Data> <Data>5dadf568</Data> <Data>unknown</Data> <Data>0.0.0.0</Data> <Data>00000000</Data> <Data>c0000005</Data> <Data>00007ffe882700ea</Data> <Data>414</Data> <Data>01d588eed01a7d37</Data> <Data>C:\Program Files\Firefox Developer Edition\firefox.exe</Data> <Data>unknown</Data> <Data>173c73da-f8df-4db3-bd97-482820bcb8a4</Data> <Data /> <Data /> </EventData> </Event> I don't even have idea where to start looking for the actual reason.

Chosen solution

Some problems occur when your Internet security program was set to trust the previous version of Firefox, but no longer recognizes your updated version as trusted. Now how to fix the problem: To allow Firefox to connect to the Internet again;

  • Make sure your Internet security software is up-to-date (i.e. you are running the latest version).
  • Remove Firefox from your program's list of trusted or recognized programs. For detailed instructions, see

Configure firewalls so that Firefox can access the Internet. {web link}

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Additional System Details

Application

  • User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.186 Safari/537.36

More Information

FredMcD
  • Top 10 Contributor
4274 solutions 59943 answers

Chosen Solution

Some problems occur when your Internet security program was set to trust the previous version of Firefox, but no longer recognizes your updated version as trusted. Now how to fix the problem: To allow Firefox to connect to the Internet again;

  • Make sure your Internet security software is up-to-date (i.e. you are running the latest version).
  • Remove Firefox from your program's list of trusted or recognized programs. For detailed instructions, see

Configure firewalls so that Firefox can access the Internet. {web link}

Some problems occur when your Internet security program was set to trust the previous version of Firefox, but no longer recognizes your updated version as trusted. Now how to fix the problem: To allow Firefox to connect to the Internet again; * Make sure your Internet security software is up-to-date (i.e. you are running the latest version). * Remove Firefox from your program's list of trusted or recognized programs. For detailed instructions, see '''[https://support.mozilla.org/en-US/kb/configure-firewalls-so-firefox-can-access-internet Configure firewalls so that Firefox can access the Internet.]''' {web link}
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Question owner

Thank you Fred, it worked! I have Comodo Firewall installed, Firefox was in allowed apps, and there were no mentions of Firefox in Comodo's logs, but after I updated Comodo - Firefox started to work! So I guess it was some glitch of Comodo's configuration. I'm really impressed that you were able to find a solution with so little input data, you are amazing!

Thank you Fred, it worked! I have Comodo Firewall installed, Firefox was in allowed apps, and there were no mentions of Firefox in Comodo's logs, but after I updated Comodo - Firefox started to work! So I guess it was some glitch of Comodo's configuration. I'm really impressed that you were able to find a solution with so little input data, you are amazing!
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FredMcD
  • Top 10 Contributor
4274 solutions 59943 answers

It's not the first time such problems show up here.

Glad to help. Safe Surfing.

It's not the first time such problems show up here. Glad to help. Safe Surfing.
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